The Old Trafford club have been strongly linked with a move for the Portugal international this summer after he scored 20 league goals during the 2018/19 campaign.
Fernandes dropped a big hint over his future as he prepared to travel with his team-mates to New York.
He told reporters: "I don't care about the market, I've talked about this many times.
"The only thing I can do now is that I need to catch the plane so I don't miss it.
"Will this be the last match for Sporting? I don't know, it's the coach who decides.
"I told him I'd like to play in England, but I don't care about it right now.
"If it could be this season? It could be when the club decides, I'm not in charge."
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